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that it would support the approved postmining industrial, commercial, residential, and recreation <br />land uses for disturbed areas in the bond release area. <br />Erosion Control and Sediment Yield <br />The vegetative cover on the reclaimed areas appears to be preventing rill and gully formation. <br />During the bond release inspection, one small gully was found on the reclaimed slope of the North <br />Pit. The operator placed rock in the gully after the inspection. Subsequent inspections have found <br />the gully stabilized with vegetation. No deltas or sediment fans were found on the site during the <br />bond release inspection or during recent monthly inspections. <br />The pond removal demonstration submitted with Technical Revision 15 (approved in 2008) contains <br />calculations of the Universal Soil Loss Equation (USLE) for disturbed lands at three different <br />locations in the bond release area and for adjacent undisturbed lands. The USLE is the product of <br />the following five factors: rainfall-runoff (R), soil erodibility (K), slope-length-steepness (LS), <br />cover-management (C), and erosion control practice (P). The USLE calculations in the submittal are <br />contained in Appendix 5-2 of the permit application and are shown below in Table 1. The <br />calculations used reasonable values for R, K, LS, C, and P. Comparison of the calculated disturbed <br />and undisturbed area soil loss rates indicates lower rates for the disturbed lands than for the adjacent, <br />undisturbed lands. Based on the comparison, the Division finds that the bond release area is not <br />contributing suspended solids to streamflow or runoff outside the permit area in excess of levels <br />determined on adjacent nonmined areas. <br />Table 1- USLE calculations. <br />Soil loss <br />Location R K LS C P (tons/ac/yr) <br />North Pit (Upper reclaimed) 40 0.28 28.73 0.060 1.00 <br />North Pit (Lower reclaimed) 40 0.28 21.20 0.060 1.00 <br />North Pit (Adjacent undisturbed) 40 0.25 28.18 0.130 1.00 <br />Haul road - (Reclaimed) 40 0.28 3.37 0.060 1.00 <br />Haul road - (Adjacent undisturbed) 40 0.25 11.55 0.130 1.00 <br />Equipment Storage Area (Reclaimed) 40 <br />Equipment Storage Area (Adjacent 40 <br />undisturbed) <br />Support of Postmining Land Use <br />19.30 <br />14.25 <br />36.63 <br />2.26 <br />15.02 <br />0.28 0.85 0.060 1.00 0.57 <br />0.28 0.57 0.310 1.00 1.97 <br />The approved postmining land uses for the disturbed areas in the bond release area are industrial, <br />commercial, residential, and recreation (page 5-38 of the permit application). A public recreation <br />trail extends through the undisturbed eastern part of the permit area. This trail does not exist within <br />the disturbed area. The reclaimed lands subject to the SL-04 bond release application have been <br />8